Homebrew Vertical 5/8 Experiment From Indonesia

[bejo]

Dear All and thanks special to :

Mr. Ken Robinson
Mr. CDX-007
Mr. Hommer BB
Mr. Rob KI6USW
Mr. 15minigrass
Mr. Quiksilver

to support me regarding our experiment vertical antenna
and we get lower VSWR 1:1.2 with good transmitter and the data is :

Frequency : 27.305 Mhz
Mode : USB
Power : 100 Watt
Equipment : Icom IC 710
Cable : RG 8 - 8237 30 Meter
Antenna : .64 wave length
Our Location : Malang, East Java Indonesia

Length Vertical : 23 feet
Length Radial : 9 feet
no of radial : 4 radial

Detail Coil is :

diameter Coil 1.5 " Inside diameter
diameter Wire 1.5 mm (Copper)
length area of coil 2.75"
9 Turn

Matching tap on 5 turn from bottom

Result :

VSWR : 1:1.2

Communication to Jakarta arround 950 Km
Signal Strength : 7 ~ 9 db (Recieved @ Jakarta)

Communication to Bandung , West Java Indonesia
Signal Strength : 7 ~ 9 db (Recieved @ Bandung)

Local Communication Radius 25 ~ 30 km
Signal Strength : 20 ~ 30 db (Recieved @ Local)

Note :

Pic 1 For 1st Preparation 4shared.com - photo sharing - download image Foto0509.jpg

Pic 2 For 2nd Preparation 4shared.com - photo sharing - download image Foto0510.jpg

Pic 3 For 3rd Preparation 4shared.com - photo sharing - download image Foto0511.jpg

Pic 4 For Equipment and SWR Meter 4shared.com - photo sharing - download image Foto0512.jpg

Pic 5 For VSWR Reading 4shared.com - photo sharing - download image Foto0514.jpg

Pic 5 For Antenna Over all Picture
4shared.com - photo sharing - download image Foto0520.jpg

4shared.com - photo sharing - download image Foto0524.jpg

4shared.com - photo sharing - download image Foto0531.jpg

4shared.com - photo sharing - download image Foto0535.jpg

Thanks For all my Friend

Mr. Ken Robinson
Mr. CDX-007
Mr. Hommer BB
Mr. Rob KI6USW
Mr. 15minigrass
Mr. Quiksilver

for Supporting me.

 

[Robb]

Congratulations from the US!
Now, we might talk on 27.555mhz/upper side band if conditions are ever that good!

 

[bejo]

Dear Mr Rob...

Ok We will try on Next on Friday, February 15 2010 on 9:00 PM ~ 11:30 PM
Indonesia Time

and on Saturday since 08:00 AM ~ 11:30 PM Indonesia Time

Hope can Connected and Possible Connected

Thanks

 

[bob85]

well done bejo
its been many years since i last talked to indonesia, there was a lady in jakarta that talked into england often back in the 1980's,
i hope to hear your java station some day in dx.

 

[bejo]

Dear Mr bob85

Thanks for your information... we want to communicated by air with member WorldWide DX ... i hope and we try hard....

thanks a lot for all support

 

[wavrider]

Bejo,

Great news glad to see the coil worked out for you.

You got a 5-9 into Jakarta?

I got a 5-5 in to Jakarta running 1.5 Kw into a tribander at 80 feet on 14 mhz And took a long time to get through the West coast pileup.

Glad to hear you are transmitting and recieving so well.

What is the bandwidth of the omni? 2:1 swr curve?

Congrats on all the had work paying off and good DX.

 

[bejo]

Dear Mr wavrider

The Badnwidth is Very Nice iam almost can transmit well on 27 Mhz

27.015.00 VSWR is : 1:1.5 and on the 27.705.00 VSWR is 1:1.5

is very nice and the Power is less for losses... but is now for antenna higher is 5 meter from ground, and 1 meter from Concrete floor, no Connection grounding from earth...

but iam allready trial race with some one is 50 : 50 but he is use height 12 meter from ground and power is almost 150 Watt...

oh nice hear you can communication with Jakarta .....hope can comunicated with me....

and power is wonderfull 1.5 Kw :drool:

some time i need schematic to make by self :laugh:

thanks for your attention

 

[HomerBB]

Awesome job, Bejo!

It looks great and apparently is performing great, too.

Congratulations.

 

[wavrider]

Bejo.

Sounds great on the antenna, bandwidth is god and seems according to your antenna races that you are doing real well even if not to high in the air.


Glad to see all your effort paid off and you have a very efficient antenna to go to the "races" with.

If the propagation works that way we can hopefully contact you, the solar cycle is on the upward swing again so one never knows where it will go to.

So with the 5/8 wl built what is the next project?

Take care and have fun.

Dear Mr wavrider

The Badnwidth is Very Nice iam almost can transmit well on 27 Mhz

27.015.00 VSWR is : 1:1.5 and on the 27.705.00 VSWR is 1:1.5

is very nice and the Power is less for losses... but is now for antenna higher is 5 meter from ground, and 1 meter from Concrete floor, no Connection grounding from earth...

but iam allready trial race with some one is 50 : 50 but he is use height 12 meter from ground and power is almost 150 Watt...

oh nice hear you can communication with Jakarta .....hope can comunicated with me....

and power is wonderfull 1.5 Kw :drool:

some time i need schematic to make by self :laugh:

thanks for your attention

 

[bejo]

Dear Mr Wavrider

Thanks for your support me to ask next project ....

the next project is i want calculate my Cable...

actualy the whole project is want make effeciency our station

i mean with low power output with maximum transmitt

so for the next i want calculate my cable .... do you have formula for cable ?

for upgrade height antenna from 5 meter to 11 meter from ground i still thinking about lightning .... i am worry about safety for lightning ...any advice about lightning system ?...

thanks for your kind attention